User manual

199Program description - Helicopter mixer
the collective pitch stick to its end-point. Compared to
the hover configuration, motor speed should remain
unchanged.
If motor speed falls off in the climb, even with the
drive system working at full power and therefore no
further power increase is possible, then reduce maxi-
mum blade pitch angle at full deflection of the collec-
tive pitch stick, i. e. the value of point “H”. Conversely,
the attack angle should be increased if motor speed
is to increase while climbing. Therefore, on the “Pitch”
graph page, put the vertical line on Point “H” by mov-
ing the pitch stick then change this point’s value
appropriately with the  selection keys of the right
four-way button.
This diagram shows only the
changes when setting the maximum
collective pitch value.
+100%
100%
OUTPUT
2 3 4 51
Control travel
Hover
point
Then bring the model back to hover, which should, in
turn, be achieved with the C1 stick at its center point.
If the hover flight point is now achieved only by mov-
ing the pitch stick away from its center point toward
“higher” values then this deviation should be compen-
sated by increasing the hover-flight pitch value – i. e.
for point “1” – a little until the model once again hovers
with the stick at its center point. Conversely, if the
model hovers below the mid-point, correct this by
reducing the angle of attack appropriately.
It may also be necessary to correct the carburetor
opening for the hover point (point “1”) with “C1 
throttle”.
ing the linkage point on the servo or carburetor lever.
Only then should the throttle servo’s fine-tuning be
electronically optimized.
Caution:
Inform yourself thoroughly about the dangers and
safety precautions applicable to handling motors
and helicopters before starting the motor for the
first time!
With this basic set-up complete, the motor should
be started in accordance with the motor operating
instructions: idling can then be configured using the
trim lever of the throttle/collective pitch stick. The
preset idle position will be displayed on the transmit-
ter’s basic display by a horizontal bar next to the C1
trim lever position indicator. Refer to the description of
digital trim on page 70 of this manual.
The model should lift off the ground with the collec-
tive pitch stick roughly at its center point and hover
roughly at the expected rotational speed. If this is not
the case, proceed as follows:
1. The model does not lift off until the collective
pitch stick is above the center point:
a) Rotational speed is too low
Remedy: On the graph page
for “C1  Throttle” increase
the value for point “1”.
+100%
0%
OUTPUT
2 3 4 51
Control travel
Hover
point
b) Rotational speed is too high
Remedy: Increase the
blade angle of attack pitch
by increasing the value of
point “1” on the “Pitch” graph
page.
+100%
0%
OUTPUT
2 3 4 51
Control travel
Hover
point
2. The model lifts off before the center point is
reached:
a) Rotational speed is too high
Remedy: Decrease the car-
buretor opening by reducing
the value of point “1” on the
graph page for “C1  Throt-
tle”.
+100%
0%
OUTPUT
2 3 4 51
Control travel
Hover
point
b) Rotational speed is too low
Remedy: Decrease the
blade angle of attack pitch
by reducing the value of
point “1” on the graph page
for “Pitch”.
+100%
0%
OUTPUT
2 3 4 51
Control travel
Hover
point
Important:
These settings must be reconfigured until the model
hovers at the correct rotational speed with the throttle/
collective pitch stick at its center point. The configura-
tion of all other model parameters depends on these
settings being made correctly!
Standard set-up
Standard set-up is completed on the basis of the ba-
sic set-up described above, whereby the model hov-
ers in normal flight at the correct rotational speed with
the throttle/collective pitch stick set to its center point:
This means a set-up with which the model is capable
of both hovering and flying circuits in all phases while
maintaining a constant rotational speed.
Climb settings
The combination of throttle hover setting, collective
pitch setting for the hover and the maximum collective
pitch setting (point “H”) now permits, in a simple man-
ner, a means of attaining a constant rotational speed
from hovering right through to maximum climb.
First, perform a prolonged, vertical climb by moving